Window-lock



W. ZYCH.

WINDOW LOCK.

APPLICATION FILED Nov. 19.1919.

Patented Aug. 9, 1921,

I //V VEIV TOR k/wazmy 21 612 WIT/V5885? 1 A TTOR/VEYS UNHTEE STATEfiFATENT @FFEQE.

WINDOW-LOCK.

Application filed November 19, 1919.

To all whom it may concern:

Be it known that I, VVoJoInor-r ZYoH, a citizen of Poland, and aresident of Elizabeth, in the county of Union and State of New Jersey,have invented a new and Improved VVindow-Lock, of which the following isa full, clear, and exact description.

This invention relates to looks, and more particularly to window looks.The present invention specifically relates to a burglar-proof windowcatch.

The object of the invention is to provide a window catch or lock havingpositive looking means such that it is impossible to press the windowcatch open by inserting a jimmying tool or wedge tool through the narrowspace usually left between the meeting rails of the window sash when thewindows are closed. It is a further object to provide novel lockingmeans used in connection with the catch for effecting the aforesaidpurpose.

It is a further purpose to produce a win dow lock or catch simple inconstruction, comparatively inexpensive to manufacture and one whichwill be unlikely to get out of working order.

With the above principal objects in view, the invention has relation tothe particular design of window lock and locking means as set forth inthe following specification, defined in the appended claim, andillustrated in the accompanying drawings, wherein:

Figure 1 shows a plan view of the window lock in locked position, andFig. 2 shows the same view but with the catch unlocked. Fig. 3 shows across sectional view taken through the meeting rails of a window sashwith the window catch applied thereto, and with the locking parts inengaged position.

Referring now more particularly to the drawings wherein similar partsare illustrated by identical reference characters, the numerals 5 and 5designate a pair of plates provided with suitable countersunk holesthrough which screws are introduced to fasten the plates to the adjacentsills of a window. The plates are provided with upstanding studs 6 and6. The stud 6 is grooved to leave a head 7 and the stud 6 is constructedsomewhat shorter than the grooved stud.

Specification of Letters Patent.

'9 and a collar on the plunger.

Patented Au 9, 1921.

Serial No. 339,191.

The reduced neck 8 of the stud 6 forms a keeper adapted to be engaged bya catch. The upstanding stud 6 carries a locking catch 9 pivoted on apin 10. The locking catch 9 is provided on one end thereof with a fork12 adapted to engage the neck 8 and becomes locked in connection withthe reduced neck 8 under the head 7. The upper face of the fork 12 isbeveled to form an angular surface 14. This surface 14: enables the fork12 to more effectively engage the neck 8 and also functions to draw thewindow into proper position in order to aline the two meeting rails of awindow sash. A bore is made in the locking catch 9 and a spring pressedlocking plunger 15 slidably retained in the bore. The plunger isprovided with a head 16 and a spring 17. The spring -acts to normallyhold the locking plunger downwardly in engagement with the upper surfaceof the plate 5', due to being under compression between the catch Theplate 5 is provided with a hole 18 into which the lower end of thelocking plunger enters when the locking catch is rotated to engage thereduced neck 8 0f the plate on the adj acent window rail. The spring 1'?acts to forcibly engage the locking plunger 15 with the hole 18 and thusprevent movement of the locking catch 9 due to any cause whatsoeverother than by lifting the locking plunger 15 from out of the hole 18.The locking catch 9 is provided with a suitably shaped handle or thumbpiece 19 on the inner end thereof.

The device is simple to install, effective in its locking function, andmay not be manipulated or jimmied by burglar tools or otherwisedisplaced.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

r A window lock catch comprising a pair of plates adapted to be securedto the meeting rails of the upper and lower window sash, a studintegrally made on each plate, a reduced neck on one of said studs, alocking catchpivoted on the other shorter stud, one of said plateshaving a hole in alinement with said shorter stud, a fork formed on oneend of the locking catch, said end being provided with a beveled angularface adapted catch, a head on said plunger, a spring for normallyholding said plunger downwardly with its end engaging the holein one ofsaid plates when the locking catch engages said reduced neck, andallowing the withdrawal of said plunger end from said hole when the 10locking catch is disengaged'from said reduced neck and turned about itspivot.

' woJcmoH ZYCH.

